EntityRainbowShied.java

public class EntityRainbowShield extends Entity
{
    private static final AxisAlignedBB SHIELD_BB = new AxisAlignedBB(0.0D, 0.0D, 0.0D, 3.0D, 2.0D, 0.2D);
    
    public EntityRainbowShield(World worldIn)
    {
	super(worldIn);
	this.setSize(3.0F, 2.0F);
	System.out.println("HAI");
    }
    
    @Override
    public AxisAlignedBB getEntityBoundingBox()
    {
        return super.getEntityBoundingBox();
    }
    
    public AxisAlignedBB getCollisionBox(Entity entityIn)
    {
        return entityIn.getEntityBoundingBox();
    }
    
    public AxisAlignedBB getCollisionBoundingBox()
    {
        return this.getEntityBoundingBox();
    }

    @Override
    protected void entityInit()
    {}

    @Override
    protected void readEntityFromNBT(NBTTagCompound compound)
    {}

    @Override
    protected void writeEntityToNBT(NBTTagCompound compound)
    {}
}

ModelRainbowShield.java

package com.teamwizardry.wizardry.client.render.entity;

import net.minecraft.client.model.ModelBase;
import net.minecraft.client.model.ModelRenderer;
import net.minecraft.entity.Entity;

/**
 * ModelUnicorn - Either Mojang or a mod author
 * Created using Tabula 5.1.0
 */
public class ModelRainbowShield extends ModelBase {
    public ModelRenderer shield;

    public ModelRainbowShield() {
        this.textureWidth = 24;
        this.textureHeight = 16;
        this.shield = new ModelRenderer(this, 0, 0);
        this.shield.setRotationPoint(12.0F, 8.0F, 1.0F);
        this.shield.addBox(0.0F, 0.0F, 0.0F, 24, 16, 2);
    }

    @Override
    public void render(Entity entity, float f, float f1, float f2, float f3, float f4, float f5) { 
        this.shield.render(f5);
    }
}

RenderRainbowShield.java

package com.teamwizardry.wizardry.client.render.entity;

import com.teamwizardry.wizardry.Wizardry;

import net.minecraft.client.model.ModelBase;
import net.minecraft.client.renderer.GlStateManager;
import net.minecraft.client.renderer.entity.Render;
import net.minecraft.client.renderer.entity.RenderManager;
import net.minecraft.util.ResourceLocation;

public class RenderRainbowShield extends Render<EntityRainbowShield> {
	
	private static final ResourceLocation SHIELD_TEX_PATH = new ResourceLocation(Wizardry.MODID, "textures/entity/rainbow_shield.png");
	
	private ModelBase model;
	
	public RenderRainbowShield(RenderManager renderManager, ModelBase modelBase) 
	{
	    super(renderManager);
	    this.model = modelBase;
	}
	
	@Override
	public void doRender(EntityRainbowShield entity, double x, double y, double z, float entityYaw, float partialTicks)
	{
	    GlStateManager.pushMatrix();
	    GlStateManager.translate(x, y, z);
	    this.bindEntityTexture(entity);
	    model.render(entity, partialTicks, 0.0F, 0.0F, 0.0F, 0.0F, 1.0F);
	    GlStateManager.popMatrix();
	}
	
	@Override
	protected ResourceLocation getEntityTexture(EntityRainbowShield entity) {
	    
		return SHIELD_TEX_PATH;
	}
}